How to upgrade IP Appliance 395 IPSO 4.2 to 6.2

Sometimes we are confusing with upgrading Nokia IPSO. And not everyone succeded in upgrading their Nokia IPSO. To those whom have difficulty in upgrade IPSO from 4.2 to 6.2. I have some tips that my help you in upgrading your Nokia IPSO. Follow my tips below:

To upgrade any IP appliances (IPSO) to 6.2 there are some best steps for you, please be noted that this is based on a Gateway only with separate management server:

Use Voyager to upgrade the IPSO version from 4.2 to 6.2 including bootmanager